作者:Gérard Excoffier、Didier Gagnaire、Jean-Pierre Utille
DOI:10.1016/0008-6215(84)85331-8
日期:1984.6
Abstract Twenty-one derivatives of reducing disaccharides, d -xylopyranosyl-(1→2)-, -(1→3)-, and -(1→4)-α- or -β- d -xylose were synthesized according to the Helferich and Zirner method. Disaccharides having a pyranose reducing unit were prepared by condensation of 2,3,4-tri-O-acetyl-, 2,4-di-O-acetyl-3-O-chloroacetyl-, and 2,3-di-O-acetyl-4-O-chloroacetyl-α- d -xylopyranosyl bromide with tri-O-acetyl-β-
摘要合成了二十一种还原二糖衍生物,d-吡喃吡喃糖基-(1→2)-,-(1→3)-和-(1→4)-α-或-β-d-木糖。 Helferich和Zirner方法。通过将2,3,4-三-O-乙酰基-,2,4-二-O-乙酰基-3-O-氯乙酰基和2,3-二-O-缩合来制备具有吡喃糖还原单元的二糖。乙酰基-4-O-氯乙酰基-α-d-吡喃木糖基溴化物与三-O-乙酰基-β-d-吡喃木糖衍生物; 其中1,2,4-三-O-乙酰基-3-O-(2,4-二-O-乙酰基-β-d-吡喃吡喃糖基)-β-d-木吡喃糖和1,2,3-三吡喃糖制备了在非还原糖基团中具有游离羟基的-O-乙酰基-4-O-(2,3-二-O-乙酰基-β-d-吡喃木糖基)-β-d-木吡喃糖,用于合成高级-分子量 线性低聚物。容易获得的5-O-氯乙酰基或5-O-乙酰基-1,2-O-异亚丙基-α-d-木呋喃糖的糖基化反应为1,2-O-异亚丙基-3-O-β-d